| 摘要 |
Device for connecting up telephone sets in a system comprising one or more external direct sockets. The invention relates to a device for linking, by electrical cable 6, boxes 4, 5 fulfilling the function of telephone sockets for telephone sets 1, 2 of the device. The device is supplied by a battery or by the mains and comprises one or more direct sockets 7 for listening, recording or sending 3 apparatuses. The device according to the invention is particularly intended for teaching languages, for training secretaries and businessmen or for arrangements at temporary sites. <IMAGE>
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